新装的vsftp不能连接，出现
500 OOPS: cap_set_proc
错误提示
解决方法如下,需要将capability模块加载，
手动加载模块：
# modprobe capability
或者编译进内核:
CONFIG_SECURITY_CAPABILITIES:
If you are unsure how to answer this question, answer Y.
Symbol: SECURITY_CAPABILITIES [=y]
Prompt: Default Linux Capabilities
Defined at security/Kconfig:56
Depends on: SECURITY
Location:
-> Security options
-> Enable different security models (SECURITY [=y])